1 /* Definitions for c-common.c.
2 Copyright (C) 1987, 1993, 1994, 1995, 1997, 1998,
3 1999, 2000, 2001 Free Software Foundation, Inc.
5 This file is part of GCC.
7 GCC is free software; you can redistribute it and/or modify it under
8 the terms of the GNU General Public License as published by the Free
9 Software Foundation; either version 2, or (at your option) any later
12 GCC is distributed in the hope that it will be useful, but WITHOUT ANY
13 WARRANTY; without even the implied warranty of MERCHANTABILITY or
14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
17 You should have received a copy of the GNU General Public License
18 along with GCC; see the file COPYING. If not, write to the Free
19 Software Foundation, 59 Temple Place - Suite 330, Boston, MA
22 #ifndef GCC_C_COMMON_H
23 #define GCC_C_COMMON_H
25 #include "splay-tree.h"
28 /* Usage of TREE_LANG_FLAG_?:
29 0: COMPOUND_STMT_NO_SCOPE (in COMPOUND_STMT).
30 TREE_NEGATED_INT (in INTEGER_CST).
31 IDENTIFIER_MARKED (used by search routines).
32 SCOPE_BEGIN_P (in SCOPE_STMT)
33 DECL_PRETTY_FUNCTION_P (in VAR_DECL)
34 NEW_FOR_SCOPE_P (in FOR_STMT)
35 ASM_INPUT_P (in ASM_STMT)
36 1: C_DECLARED_LABEL_FLAG (in LABEL_DECL)
37 STMT_IS_FULL_EXPR_P (in _STMT)
38 2: STMT_LINENO_FOR_FN_P (in _STMT)
39 3: SCOPE_NO_CLEANUPS_P (in SCOPE_STMT)
40 4: SCOPE_PARTIAL_P (in SCOPE_STMT)
43 /* Reserved identifiers. This is the union of all the keywords for C,
44 C++, and Objective C. All the type modifiers have to be in one
45 block at the beginning, because they are used as mask bits. There
46 are 27 type modifiers; if we add many more we will have to redesign
47 the mask mechanism. */
52 /* C, in empirical order of frequency. */
54 RID_UNSIGNED, RID_LONG, RID_CONST, RID_EXTERN,
55 RID_REGISTER, RID_TYPEDEF, RID_SHORT, RID_INLINE,
56 RID_VOLATILE, RID_SIGNED, RID_AUTO, RID_RESTRICT,
59 RID_BOUNDED, RID_UNBOUNDED, RID_COMPLEX,
62 RID_FRIEND, RID_VIRTUAL, RID_EXPLICIT, RID_EXPORT, RID_MUTABLE,
65 RID_IN, RID_OUT, RID_INOUT, RID_BYCOPY, RID_BYREF, RID_ONEWAY,
68 RID_INT, RID_CHAR, RID_FLOAT, RID_DOUBLE, RID_VOID,
69 RID_ENUM, RID_STRUCT, RID_UNION, RID_IF, RID_ELSE,
70 RID_WHILE, RID_DO, RID_FOR, RID_SWITCH, RID_CASE,
71 RID_DEFAULT, RID_BREAK, RID_CONTINUE, RID_RETURN, RID_GOTO,
75 RID_ASM, RID_TYPEOF, RID_ALIGNOF, RID_ATTRIBUTE, RID_VA_ARG,
76 RID_EXTENSION, RID_IMAGPART, RID_REALPART, RID_LABEL, RID_PTRBASE,
77 RID_PTREXTENT, RID_PTRVALUE, RID_CHOOSE_EXPR, RID_TYPES_COMPATIBLE_P,
79 /* Too many ways of getting the name of a function as a string */
80 RID_FUNCTION_NAME, RID_PRETTY_FUNCTION_NAME, RID_C99_FUNCTION_NAME,
83 RID_BOOL, RID_WCHAR, RID_CLASS,
84 RID_PUBLIC, RID_PRIVATE, RID_PROTECTED,
85 RID_TEMPLATE, RID_NULL, RID_CATCH,
86 RID_DELETE, RID_FALSE, RID_NAMESPACE,
87 RID_NEW, RID_OPERATOR, RID_THIS,
88 RID_THROW, RID_TRUE, RID_TRY,
89 RID_TYPENAME, RID_TYPEID, RID_USING,
92 RID_CONSTCAST, RID_DYNCAST, RID_REINTCAST, RID_STATCAST,
94 /* alternate spellings */
95 RID_AND, RID_AND_EQ, RID_NOT, RID_NOT_EQ,
96 RID_OR, RID_OR_EQ, RID_XOR, RID_XOR_EQ,
97 RID_BITAND, RID_BITOR, RID_COMPL,
100 RID_ID, RID_AT_ENCODE, RID_AT_END,
101 RID_AT_CLASS, RID_AT_ALIAS, RID_AT_DEFS,
102 RID_AT_PRIVATE, RID_AT_PROTECTED, RID_AT_PUBLIC,
103 RID_AT_PROTOCOL, RID_AT_SELECTOR, RID_AT_INTERFACE,
104 RID_AT_IMPLEMENTATION,
108 RID_FIRST_MODIFIER = RID_STATIC,
109 RID_LAST_MODIFIER = RID_ONEWAY,
111 RID_FIRST_AT = RID_AT_ENCODE,
112 RID_LAST_AT = RID_AT_IMPLEMENTATION,
113 RID_FIRST_PQ = RID_IN,
114 RID_LAST_PQ = RID_ONEWAY
117 #define OBJC_IS_AT_KEYWORD(rid) \
118 ((unsigned int)(rid) >= (unsigned int)RID_FIRST_AT && \
119 (unsigned int)(rid) <= (unsigned int)RID_LAST_AT)
121 #define OBJC_IS_PQ_KEYWORD(rid) \
122 ((unsigned int)(rid) >= (unsigned int)RID_FIRST_PQ && \
123 (unsigned int)(rid) <= (unsigned int)RID_LAST_PQ)
125 /* The elements of `ridpointers' are identifier nodes for the reserved
126 type names and storage classes. It is indexed by a RID_... value. */
127 extern tree *ridpointers;
129 /* Standard named or nameless data types of the C compiler. */
134 CTI_SIGNED_WCHAR_TYPE,
135 CTI_UNSIGNED_WCHAR_TYPE,
137 CTI_C_SIZE_TYPE, /* The type used for the size_t typedef and the
138 result type of sizeof (an ordinary type without
139 TYPE_IS_SIZETYPE set, unlike the internal
141 CTI_SIGNED_SIZE_TYPE, /* For format checking only. */
142 CTI_UNSIGNED_PTRDIFF_TYPE, /* For format checking only. */
145 CTI_WIDEST_INT_LIT_TYPE,
146 CTI_WIDEST_UINT_LIT_TYPE,
149 CTI_WCHAR_ARRAY_TYPE,
152 CTI_CONST_STRING_TYPE,
154 /* Type for boolean expressions (bool in C++, int in C). */
158 /* C99's _Bool type. */
162 CTI_DEFAULT_FUNCTION_TYPE,
164 CTI_G77_INTEGER_TYPE,
165 CTI_G77_UINTEGER_TYPE,
166 CTI_G77_LONGINT_TYPE,
167 CTI_G77_ULONGINT_TYPE,
169 /* These are not types, but we have to look them up all the time. */
170 CTI_FUNCTION_NAME_DECL,
171 CTI_PRETTY_FUNCTION_NAME_DECL,
172 CTI_C99_FUNCTION_NAME_DECL,
173 CTI_SAVED_FUNCTION_NAME_DECLS,
180 #define C_RID_CODE(id) (((struct c_common_identifier *) (id))->node.rid_code)
182 /* Identifier part common to the C front ends. Inherits from
183 tree_identifier, despite appearances. */
184 struct c_common_identifier
186 struct tree_common common;
187 struct cpp_hashnode node;
190 #define wchar_type_node c_global_trees[CTI_WCHAR_TYPE]
191 #define signed_wchar_type_node c_global_trees[CTI_SIGNED_WCHAR_TYPE]
192 #define unsigned_wchar_type_node c_global_trees[CTI_UNSIGNED_WCHAR_TYPE]
193 #define wint_type_node c_global_trees[CTI_WINT_TYPE]
194 #define c_size_type_node c_global_trees[CTI_C_SIZE_TYPE]
195 #define signed_size_type_node c_global_trees[CTI_SIGNED_SIZE_TYPE]
196 #define unsigned_ptrdiff_type_node c_global_trees[CTI_UNSIGNED_PTRDIFF_TYPE]
197 #define intmax_type_node c_global_trees[CTI_INTMAX_TYPE]
198 #define uintmax_type_node c_global_trees[CTI_UINTMAX_TYPE]
199 #define widest_integer_literal_type_node c_global_trees[CTI_WIDEST_INT_LIT_TYPE]
200 #define widest_unsigned_literal_type_node c_global_trees[CTI_WIDEST_UINT_LIT_TYPE]
202 #define boolean_type_node c_global_trees[CTI_BOOLEAN_TYPE]
203 #define boolean_true_node c_global_trees[CTI_BOOLEAN_TRUE]
204 #define boolean_false_node c_global_trees[CTI_BOOLEAN_FALSE]
206 #define c_bool_type_node c_global_trees[CTI_C_BOOL_TYPE]
207 #define c_bool_true_node c_global_trees[CTI_C_BOOL_TRUE]
208 #define c_bool_false_node c_global_trees[CTI_C_BOOL_FALSE]
210 #define char_array_type_node c_global_trees[CTI_CHAR_ARRAY_TYPE]
211 #define wchar_array_type_node c_global_trees[CTI_WCHAR_ARRAY_TYPE]
212 #define int_array_type_node c_global_trees[CTI_INT_ARRAY_TYPE]
213 #define string_type_node c_global_trees[CTI_STRING_TYPE]
214 #define const_string_type_node c_global_trees[CTI_CONST_STRING_TYPE]
216 #define default_function_type c_global_trees[CTI_DEFAULT_FUNCTION_TYPE]
218 /* g77 integer types, which which must be kept in sync with f/com.h */
219 #define g77_integer_type_node c_global_trees[CTI_G77_INTEGER_TYPE]
220 #define g77_uinteger_type_node c_global_trees[CTI_G77_UINTEGER_TYPE]
221 #define g77_longint_type_node c_global_trees[CTI_G77_LONGINT_TYPE]
222 #define g77_ulongint_type_node c_global_trees[CTI_G77_ULONGINT_TYPE]
224 #define function_name_decl_node c_global_trees[CTI_FUNCTION_NAME_DECL]
225 #define pretty_function_name_decl_node c_global_trees[CTI_PRETTY_FUNCTION_NAME_DECL]
226 #define c99_function_name_decl_node c_global_trees[CTI_C99_FUNCTION_NAME_DECL]
227 #define saved_function_name_decls c_global_trees[CTI_SAVED_FUNCTION_NAME_DECLS]
229 /* A node for `((void) 0)'. */
230 #define void_zero_node c_global_trees[CTI_VOID_ZERO]
232 extern tree c_global_trees[CTI_MAX];
234 /* Mark which labels are explicitly declared.
235 These may be shadowed, and may be referenced from nested functions. */
236 #define C_DECLARED_LABEL_FLAG(label) TREE_LANG_FLAG_1 (label)
238 /* Flag strings given by __FUNCTION__ and __PRETTY_FUNCTION__ for a
239 warning if they undergo concatenation. */
240 #define C_ARTIFICIAL_STRING_P(NODE) TREE_LANG_FLAG_0 (NODE)
242 typedef enum c_language_kind
244 clk_c, /* A dialect of C: K&R C, ANSI/ISO C89, C2000,
246 clk_cplusplus, /* ANSI/ISO C++ */
247 clk_objective_c /* Objective C */
251 /* Information about a statement tree. */
254 /* The last statement added to the tree. */
256 /* The type of the last expression statement. (This information is
257 needed to implement the statement-expression extension.) */
258 tree x_last_expr_type;
259 /* In C++, Non-zero if we should treat statements as full
260 expressions. In particular, this variable is no-zero if at the
261 end of a statement we should destroy any temporaries created
262 during that statement. Similarly, if, at the end of a block, we
263 should destroy any local variables in this block. Normally, this
264 variable is non-zero, since those are the normal semantics of
267 However, in order to represent aggregate initialization code as
268 tree structure, we use statement-expressions. The statements
269 within the statement expression should not result in cleanups
270 being run until the entire enclosing statement is complete.
272 This flag has no effect in C. */
273 int stmts_are_full_exprs_p;
276 typedef struct stmt_tree_s *stmt_tree;
278 /* Global state pertinent to the current function. Some C dialects
279 extend this structure with additional fields. */
281 struct language_function {
282 /* While we are parsing the function, this contains information
283 about the statement-tree that we are building. */
284 struct stmt_tree_s x_stmt_tree;
285 /* The stack of SCOPE_STMTs for the current function. */
286 tree x_scope_stmt_stack;
289 /* When building a statement-tree, this is the last statement added to
292 #define last_tree (current_stmt_tree ()->x_last_stmt)
294 /* The type of the last expression-statement we have seen. */
296 #define last_expr_type (current_stmt_tree ()->x_last_expr_type)
298 /* LAST_TREE contains the last statement parsed. These are chained
299 together through the TREE_CHAIN field, but often need to be
300 re-organized since the parse is performed bottom-up. This macro
301 makes LAST_TREE the indicated SUBSTMT of STMT. */
303 #define RECHAIN_STMTS(stmt, substmt) \
305 substmt = TREE_CHAIN (stmt); \
306 TREE_CHAIN (stmt) = NULL_TREE; \
310 /* Language-specific hooks. */
312 extern int (*lang_statement_code_p) PARAMS ((enum tree_code));
313 extern void (*lang_expand_stmt) PARAMS ((tree));
314 extern void (*lang_expand_decl_stmt) PARAMS ((tree));
315 extern void (*lang_expand_function_end) PARAMS ((void));
317 /* Callback that determines if it's ok for a function to have no
318 noreturn attribute. */
319 extern int (*lang_missing_noreturn_ok_p) PARAMS ((tree));
322 extern stmt_tree current_stmt_tree PARAMS ((void));
323 extern tree *current_scope_stmt_stack PARAMS ((void));
324 extern void begin_stmt_tree PARAMS ((tree *));
325 extern tree add_stmt PARAMS ((tree));
326 extern void add_decl_stmt PARAMS ((tree));
327 extern tree add_scope_stmt PARAMS ((int, int));
328 extern void finish_stmt_tree PARAMS ((tree *));
330 extern int statement_code_p PARAMS ((enum tree_code));
331 extern tree walk_stmt_tree PARAMS ((tree *,
334 extern void prep_stmt PARAMS ((tree));
335 extern void expand_stmt PARAMS ((tree));
336 extern void mark_stmt_tree PARAMS ((void *));
337 extern void shadow_warning PARAMS ((const char *,
340 /* Extra information associated with a DECL. Other C dialects extend
341 this structure in various ways. The C front-end only uses this
342 structure for FUNCTION_DECLs; all other DECLs have a NULL
343 DECL_LANG_SPECIFIC field. */
346 unsigned declared_inline : 1;
349 /* In a FUNCTION_DECL for which DECL_BUILT_IN does not hold, this is
350 the approximate number of statements in this function. There is
351 no need for this number to be exact; it is only used in various
352 heuristics regarding optimization. */
353 #define DECL_NUM_STMTS(NODE) \
354 (FUNCTION_DECL_CHECK (NODE)->decl.u1.i)
356 extern void c_mark_lang_decl PARAMS ((struct c_lang_decl *));
358 /* The variant of the C language being processed. Each C language
359 front-end defines this variable. */
361 extern c_language_kind c_language;
363 /* Nonzero means give string constants the type `const char *', rather
366 extern int flag_const_strings;
368 /* Nonzero means give `double' the same size as `float'. */
370 extern int flag_short_double;
372 /* Nonzero means give `wchar_t' the same size as `short'. */
374 extern int flag_short_wchar;
376 /* Warn about *printf or *scanf format/argument anomalies. */
378 extern int warn_format;
380 /* Warn about Y2K problems with strftime formats. */
382 extern int warn_format_y2k;
384 /* Warn about excess arguments to formats. */
386 extern int warn_format_extra_args;
388 /* Warn about non-literal format arguments. */
390 extern int warn_format_nonliteral;
392 /* Warn about possible security problems with calls to format functions. */
394 extern int warn_format_security;
396 /* Warn about possible violations of sequence point rules. */
398 extern int warn_sequence_point;
400 /* Warn about functions which might be candidates for format attributes. */
402 extern int warn_missing_format_attribute;
404 /* Nonzero means warn about sizeof (function) or addition/subtraction
405 of function pointers. */
407 extern int warn_pointer_arith;
409 /* Nonzero means to warn about compile-time division by zero. */
410 extern int warn_div_by_zero;
412 /* Nonzero means do some things the same way PCC does. */
414 extern int flag_traditional;
416 /* Nonzero means enable C89 Amendment 1 features. */
418 extern int flag_isoc94;
420 /* Nonzero means use the ISO C99 dialect of C. */
422 extern int flag_isoc99;
424 /* Nonzero means environment is hosted (i.e., not freestanding) */
426 extern int flag_hosted;
428 /* Nonzero means add default format_arg attributes for functions not
431 extern int flag_noniso_default_format_attributes;
433 /* Nonzero means don't recognize any builtin functions. */
435 extern int flag_no_builtin;
437 /* Nonzero means don't recognize the non-ANSI builtin functions.
440 extern int flag_no_nonansi_builtin;
442 /* Nonzero means warn about suggesting putting in ()'s. */
444 extern int warn_parentheses;
446 /* Warn if a type conversion is done that might have confusing results. */
448 extern int warn_conversion;
450 /* Nonzero means warn about usage of long long,
451 when `-pedantic' and not C99. */
453 extern int warn_long_long;
455 /* C types are partitioned into three subsets: object, function, and
457 #define C_TYPE_OBJECT_P(type) \
458 (TREE_CODE (type) != FUNCTION_TYPE && TYPE_SIZE (type))
460 #define C_TYPE_INCOMPLETE_P(type) \
461 (TREE_CODE (type) != FUNCTION_TYPE && TYPE_SIZE (type) == 0)
463 #define C_TYPE_FUNCTION_P(type) \
464 (TREE_CODE (type) == FUNCTION_TYPE)
466 /* For convenience we define a single macro to identify the class of
467 object or incomplete types. */
468 #define C_TYPE_OBJECT_OR_INCOMPLETE_P(type) \
469 (!C_TYPE_FUNCTION_P (type))
471 /* Record in each node resulting from a binary operator
472 what operator was specified for it. */
473 #define C_EXP_ORIGINAL_CODE(exp) ((enum tree_code) TREE_COMPLEXITY (exp))
475 /* Pointer to function to lazily generate the VAR_DECL for __FUNCTION__ etc.
476 ID is the identifier to use, NAME is the string.
477 TYPE_DEP indicates whether it depends on type of the function or not
478 (i.e. __PRETTY_FUNCTION__). */
480 extern tree (*make_fname_decl) PARAMS ((tree, int));
482 extern tree identifier_global_value PARAMS ((tree));
483 extern void record_builtin_type PARAMS ((enum rid,
484 const char *, tree));
485 extern tree build_void_list_node PARAMS ((void));
486 extern void start_fname_decls PARAMS ((void));
487 extern void finish_fname_decls PARAMS ((void));
488 extern const char *fname_as_string PARAMS ((int));
489 extern tree fname_decl PARAMS ((unsigned, tree));
490 extern const char *fname_string PARAMS ((unsigned));
492 extern void check_function_format PARAMS ((int *, tree, tree));
493 extern void set_Wformat PARAMS ((int));
494 extern tree handle_format_attribute PARAMS ((tree *, tree, tree,
496 extern tree handle_format_arg_attribute PARAMS ((tree *, tree, tree,
498 extern void c_common_insert_default_attributes PARAMS ((tree));
499 extern void c_apply_type_quals_to_decl PARAMS ((int, tree));
500 extern tree c_sizeof PARAMS ((tree));
501 extern tree c_alignof PARAMS ((tree));
502 extern tree c_alignof_expr PARAMS ((tree));
503 /* Print an error message for invalid operands to arith operation CODE.
504 NOP_EXPR is used as a special case (see truthvalue_conversion). */
505 extern void binary_op_error PARAMS ((enum tree_code));
506 extern tree c_expand_expr_stmt PARAMS ((tree));
507 extern void c_expand_start_cond PARAMS ((tree, int));
508 extern void c_finish_then PARAMS ((void));
509 extern void c_expand_start_else PARAMS ((void));
510 extern void c_finish_else PARAMS ((void));
511 extern void c_expand_end_cond PARAMS ((void));
512 /* Validate the expression after `case' and apply default promotions. */
513 extern tree check_case_value PARAMS ((tree));
514 /* Concatenate a list of STRING_CST nodes into one STRING_CST. */
515 extern tree combine_strings PARAMS ((tree));
516 extern void constant_expression_warning PARAMS ((tree));
517 extern tree convert_and_check PARAMS ((tree, tree));
518 extern void overflow_warning PARAMS ((tree));
519 extern void unsigned_conversion_warning PARAMS ((tree, tree));
521 /* Read the rest of the current #-directive line. */
522 extern char *get_directive_line PARAMS ((void));
523 #define GET_DIRECTIVE_LINE() get_directive_line ()
525 /* Subroutine of build_binary_op, used for comparison operations.
526 See if the operands have both been converted from subword integer types
527 and, if so, perhaps change them both back to their original type. */
528 extern tree shorten_compare PARAMS ((tree *, tree *, tree *, enum tree_code *));
530 extern unsigned int min_precision PARAMS ((tree, int));
532 /* Add qualifiers to a type, in the fashion for C. */
533 extern tree c_build_qualified_type PARAMS ((tree, int));
535 /* Build tree nodes and builtin functions common to both C and C++ language
537 extern void c_common_nodes_and_builtins PARAMS ((void));
539 extern void disable_builtin_function PARAMS ((const char *));
541 extern tree build_va_arg PARAMS ((tree, tree));
543 extern void c_common_init_options PARAMS ((enum c_language_kind));
544 extern void c_common_post_options PARAMS ((void));
545 extern const char *c_common_init PARAMS ((const char *));
546 extern void c_common_finish PARAMS ((void));
547 extern HOST_WIDE_INT c_common_get_alias_set PARAMS ((tree));
548 extern bool c_promoting_integer_type_p PARAMS ((tree));
549 extern int self_promoting_args_p PARAMS ((tree));
550 extern tree simple_type_promotes_to PARAMS ((tree));
551 extern tree strip_array_types PARAMS ((tree));
553 /* These macros provide convenient access to the various _STMT nodes. */
555 /* Nonzero if this statement should be considered a full-expression,
556 i.e., if temporaries created during this statement should have
557 their destructors run at the end of this statement. (In C, this
558 will always be false, since there are no destructors.) */
559 #define STMT_IS_FULL_EXPR_P(NODE) TREE_LANG_FLAG_1 ((NODE))
561 /* IF_STMT accessors. These give access to the condition of the if
562 statement, the then block of the if statement, and the else block
563 of the if statement if it exists. */
564 #define IF_COND(NODE) TREE_OPERAND (IF_STMT_CHECK (NODE), 0)
565 #define THEN_CLAUSE(NODE) TREE_OPERAND (IF_STMT_CHECK (NODE), 1)
566 #define ELSE_CLAUSE(NODE) TREE_OPERAND (IF_STMT_CHECK (NODE), 2)
568 /* WHILE_STMT accessors. These give access to the condition of the
569 while statement and the body of the while statement, respectively. */
570 #define WHILE_COND(NODE) TREE_OPERAND (WHILE_STMT_CHECK (NODE), 0)
571 #define WHILE_BODY(NODE) TREE_OPERAND (WHILE_STMT_CHECK (NODE), 1)
573 /* DO_STMT accessors. These give access to the condition of the do
574 statement and the body of the do statement, respectively. */
575 #define DO_COND(NODE) TREE_OPERAND (DO_STMT_CHECK (NODE), 0)
576 #define DO_BODY(NODE) TREE_OPERAND (DO_STMT_CHECK (NODE), 1)
578 /* RETURN_STMT accessors. These give the expression associated with a
579 return statement, and whether it should be ignored when expanding
580 (as opposed to inlining). */
581 #define RETURN_EXPR(NODE) TREE_OPERAND (RETURN_STMT_CHECK (NODE), 0)
583 /* EXPR_STMT accessor. This gives the expression associated with an
584 expression statement. */
585 #define EXPR_STMT_EXPR(NODE) TREE_OPERAND (EXPR_STMT_CHECK (NODE), 0)
587 /* FOR_STMT accessors. These give access to the init statement,
588 condition, update expression, and body of the for statement,
590 #define FOR_INIT_STMT(NODE) TREE_OPERAND (FOR_STMT_CHECK (NODE), 0)
591 #define FOR_COND(NODE) TREE_OPERAND (FOR_STMT_CHECK (NODE), 1)
592 #define FOR_EXPR(NODE) TREE_OPERAND (FOR_STMT_CHECK (NODE), 2)
593 #define FOR_BODY(NODE) TREE_OPERAND (FOR_STMT_CHECK (NODE), 3)
595 /* SWITCH_STMT accessors. These give access to the condition and body
596 of the switch statement, respectively. */
597 #define SWITCH_COND(NODE) TREE_OPERAND (SWITCH_STMT_CHECK (NODE), 0)
598 #define SWITCH_BODY(NODE) TREE_OPERAND (SWITCH_STMT_CHECK (NODE), 1)
600 /* CASE_LABEL accessors. These give access to the high and low values
601 of a case label, respectively. */
602 #define CASE_LOW(NODE) TREE_OPERAND (CASE_LABEL_CHECK (NODE), 0)
603 #define CASE_HIGH(NODE) TREE_OPERAND (CASE_LABEL_CHECK (NODE), 1)
604 #define CASE_LABEL_DECL(NODE) TREE_OPERAND (CASE_LABEL_CHECK (NODE), 2)
606 /* GOTO_STMT accessor. This gives access to the label associated with
608 #define GOTO_DESTINATION(NODE) TREE_OPERAND (GOTO_STMT_CHECK (NODE), 0)
609 /* True for goto created artifically by the compiler. */
610 #define GOTO_FAKE_P(NODE) (TREE_LANG_FLAG_0 (GOTO_STMT_CHECK (NODE)))
612 /* COMPOUND_STMT accessor. This gives access to the TREE_LIST of
613 statements associated with a compound statement. The result is the
614 first statement in the list. Succeeding nodes can be accessed by
615 calling TREE_CHAIN on a node in the list. */
616 #define COMPOUND_BODY(NODE) TREE_OPERAND (COMPOUND_STMT_CHECK (NODE), 0)
618 /* ASM_STMT accessors. ASM_STRING returns a STRING_CST for the
619 instruction (e.g., "mov x, y"). ASM_OUTPUTS, ASM_INPUTS, and
620 ASM_CLOBBERS represent the outputs, inputs, and clobbers for the
622 #define ASM_CV_QUAL(NODE) TREE_OPERAND (ASM_STMT_CHECK (NODE), 0)
623 #define ASM_STRING(NODE) TREE_OPERAND (ASM_STMT_CHECK (NODE), 1)
624 #define ASM_OUTPUTS(NODE) TREE_OPERAND (ASM_STMT_CHECK (NODE), 2)
625 #define ASM_INPUTS(NODE) TREE_OPERAND (ASM_STMT_CHECK (NODE), 3)
626 #define ASM_CLOBBERS(NODE) TREE_OPERAND (ASM_STMT_CHECK (NODE), 4)
628 /* DECL_STMT accessor. This gives access to the DECL associated with
629 the given declaration statement. */
630 #define DECL_STMT_DECL(NODE) TREE_OPERAND (DECL_STMT_CHECK (NODE), 0)
632 /* STMT_EXPR accessor. */
633 #define STMT_EXPR_STMT(NODE) TREE_OPERAND (STMT_EXPR_CHECK (NODE), 0)
635 /* LABEL_STMT accessor. This gives access to the label associated with
636 the given label statement. */
637 #define LABEL_STMT_LABEL(NODE) TREE_OPERAND (LABEL_STMT_CHECK (NODE), 0)
639 /* COMPOUND_LITERAL_EXPR accessor. */
640 #define COMPOUND_LITERAL_EXPR_DECL(NODE) \
641 TREE_OPERAND (COMPOUND_LITERAL_EXPR_CHECK (NODE), 0)
643 /* Nonzero if this SCOPE_STMT is for the beginning of a scope. */
644 #define SCOPE_BEGIN_P(NODE) \
645 (TREE_LANG_FLAG_0 (SCOPE_STMT_CHECK (NODE)))
647 /* Nonzero if this SCOPE_STMT is for the end of a scope. */
648 #define SCOPE_END_P(NODE) \
649 (!SCOPE_BEGIN_P (SCOPE_STMT_CHECK (NODE)))
651 /* The BLOCK containing the declarations contained in this scope. */
652 #define SCOPE_STMT_BLOCK(NODE) \
653 (TREE_OPERAND (SCOPE_STMT_CHECK (NODE), 0))
655 /* Nonzero for a SCOPE_STMT if there were no variables in this scope. */
656 #define SCOPE_NULLIFIED_P(NODE) \
657 (SCOPE_STMT_BLOCK ((NODE)) == NULL_TREE)
659 /* Nonzero for a SCOPE_STMT which represents a lexical scope, but
660 which should be treated as non-existent from the point of view of
661 running cleanup actions. */
662 #define SCOPE_NO_CLEANUPS_P(NODE) \
663 (TREE_LANG_FLAG_3 (SCOPE_STMT_CHECK (NODE)))
665 /* Nonzero for a SCOPE_STMT if this statement is for a partial scope.
673 there is (implicitly) a new scope after `l', even though there are
674 no curly braces. In particular, when we hit the goto, we must
675 destroy s2 and then re-construct it. For the implicit scope,
676 SCOPE_PARTIAL_P will be set. */
677 #define SCOPE_PARTIAL_P(NODE) \
678 (TREE_LANG_FLAG_4 (SCOPE_STMT_CHECK (NODE)))
680 /* Nonzero for an ASM_STMT if the assembly statement is volatile. */
681 #define ASM_VOLATILE_P(NODE) \
682 (ASM_CV_QUAL (ASM_STMT_CHECK (NODE)) != NULL_TREE)
684 /* The line-number at which a statement began. But if
685 STMT_LINENO_FOR_FN_P does holds, then this macro gives the
686 line number for the end of the current function instead. */
687 #define STMT_LINENO(NODE) \
688 (TREE_COMPLEXITY ((NODE)))
690 /* If non-zero, the STMT_LINENO for NODE is the line at which the
692 #define STMT_LINENO_FOR_FN_P(NODE) \
693 (TREE_LANG_FLAG_2 ((NODE)))
695 /* Nonzero if we want the new ISO rules for pushing a new scope for `for'
696 initialization variables. */
697 #define NEW_FOR_SCOPE_P(NODE) (TREE_LANG_FLAG_0 (NODE))
699 /* Nonzero if we want to create an ASM_INPUT instead of an
700 ASM_OPERAND with no operands. */
701 #define ASM_INPUT_P(NODE) (TREE_LANG_FLAG_0 (NODE))
703 #define DEFTREECODE(SYM, NAME, TYPE, LENGTH) SYM,
706 C_DUMMY_TREE_CODE = LAST_AND_UNUSED_TREE_CODE,
707 #include "c-common.def"
713 extern void add_c_tree_codes PARAMS ((void));
714 extern void genrtl_do_pushlevel PARAMS ((void));
715 extern void genrtl_goto_stmt PARAMS ((tree));
716 extern void genrtl_expr_stmt PARAMS ((tree));
717 extern void genrtl_decl_stmt PARAMS ((tree));
718 extern void genrtl_if_stmt PARAMS ((tree));
719 extern void genrtl_while_stmt PARAMS ((tree));
720 extern void genrtl_do_stmt PARAMS ((tree));
721 extern void genrtl_return_stmt PARAMS ((tree));
722 extern void genrtl_for_stmt PARAMS ((tree));
723 extern void genrtl_break_stmt PARAMS ((void));
724 extern void genrtl_continue_stmt PARAMS ((void));
725 extern void genrtl_scope_stmt PARAMS ((tree));
726 extern void genrtl_switch_stmt PARAMS ((tree));
727 extern void genrtl_case_label PARAMS ((tree));
728 extern void genrtl_compound_stmt PARAMS ((tree));
729 extern void genrtl_asm_stmt PARAMS ((tree, tree,
732 extern void genrtl_decl_cleanup PARAMS ((tree, tree));
733 extern int stmts_are_full_exprs_p PARAMS ((void));
734 extern int anon_aggr_type_p PARAMS ((tree));
736 /* For a VAR_DECL that is an anonymous union, these are the various
737 sub-variables that make up the anonymous union. */
738 #define DECL_ANON_UNION_ELEMS(NODE) DECL_ARGUMENTS ((NODE))
740 /* In a FIELD_DECL, nonzero if the decl was originally a bitfield. */
741 #define DECL_C_BIT_FIELD(NODE) \
742 (DECL_LANG_FLAG_4 (FIELD_DECL_CHECK (NODE)) == 1)
743 #define SET_DECL_C_BIT_FIELD(NODE) \
744 (DECL_LANG_FLAG_4 (FIELD_DECL_CHECK (NODE)) = 1)
745 #define CLEAR_DECL_C_BIT_FIELD(NODE) \
746 (DECL_LANG_FLAG_4 (FIELD_DECL_CHECK (NODE)) = 0)
748 /* In a VAR_DECL, nonzero if the decl is a register variable with
749 an explicit asm specification. */
750 #define DECL_C_HARD_REGISTER(DECL) DECL_LANG_FLAG_4 (VAR_DECL_CHECK (DECL))
752 extern void emit_local_var PARAMS ((tree));
753 extern void make_rtl_for_local_static PARAMS ((tree));
754 extern tree expand_cond PARAMS ((tree));
755 extern tree c_expand_return PARAMS ((tree));
756 extern tree do_case PARAMS ((tree, tree));
757 extern tree build_stmt PARAMS ((enum tree_code, ...));
758 extern tree build_case_label PARAMS ((tree, tree, tree));
759 extern tree build_continue_stmt PARAMS ((void));
760 extern tree build_break_stmt PARAMS ((void));
761 extern tree build_return_stmt PARAMS ((tree));
763 #define COMPOUND_STMT_NO_SCOPE(NODE) TREE_LANG_FLAG_0 (NODE)
765 extern void c_expand_asm_operands PARAMS ((tree, tree, tree, tree, int, const char *, int));
767 /* These functions must be defined by each front-end which implements
768 a variant of the C language. They are used in c-common.c. */
770 extern tree build_unary_op PARAMS ((enum tree_code,
772 extern tree build_binary_op PARAMS ((enum tree_code,
774 extern int lvalue_p PARAMS ((tree));
775 extern tree default_conversion PARAMS ((tree));
777 /* Given two integer or real types, return the type for their sum.
778 Given two compatible ANSI C types, returns the merged type. */
780 extern tree common_type PARAMS ((tree, tree));
782 extern tree expand_tree_builtin PARAMS ((tree, tree, tree));
784 extern tree decl_constant_value PARAMS ((tree));
786 /* Handle increment and decrement of boolean types. */
787 extern tree boolean_increment PARAMS ((enum tree_code,
790 /* Hook currently used only by the C++ front end to reset internal state
791 after entering or leaving a header file. */
792 extern void extract_interface_info PARAMS ((void));
794 extern void mark_c_language_function PARAMS ((struct language_function *));
796 extern int case_compare PARAMS ((splay_tree_key,
799 extern tree c_add_case_label PARAMS ((splay_tree,
803 extern tree build_function_call PARAMS ((tree, tree));
805 extern tree finish_label_address_expr PARAMS ((tree));
807 /* Same function prototype, but the C and C++ front ends have
808 different implementations. Used in c-common.c. */
809 extern tree lookup_label PARAMS ((tree));
811 /* If this variable is defined to a non-NULL value, it will be called
812 after the file has been completely parsed. The argument will be
813 the GLOBAL_NAMESPACE in C++, or the list of top-level declarations
815 extern void (*back_end_hook) PARAMS ((tree));
817 /* enum expand_modified is in expr.h, as is the macro below. */
820 extern rtx c_expand_expr PARAMS ((tree, rtx, enum machine_mode,
821 enum expand_modifier));
824 extern int c_safe_from_p PARAMS ((rtx, tree));
826 extern int c_staticp PARAMS ((tree));
828 extern int c_unsafe_for_reeval PARAMS ((tree));
830 /* Information recorded about each file examined during compilation. */
834 int time; /* Time spent in the file. */
835 short interface_only; /* Flags - used only by C++ */
836 short interface_unknown;
839 struct c_fileinfo *get_fileinfo PARAMS ((const char *));
840 extern void dump_time_statistics PARAMS ((void));
842 #endif /* ! GCC_C_COMMON_H */